Abstract
Sr 3FeTaO 7 and Sr 4FeTaO 8, the n = 2 and n = 1 member of Ruddlesden–Popper (RP) phases in a double perovskite family Sr n+1 (Fe,Ta) n O 3 n+1 , have been synthesized by solid state reaction at 1350 °C in air. The crystallographic study shows that both compounds adapt typical tetragonal RP structures in the space group I4/mmm with the lattice parameters, a = 3.9650 ( 1 ) Å , c = 20.5560 ( 2 ) Å for Sr 3FeTaO 7 and a = 3.9493 ( 1 ) Å , c = 12.6641 ( 2 ) Å for Sr 4FeTaO 8. Similar to Sr 2FeTaO 6, Fe 3+ and Ta 5+ ions are randomly distributed in a single B-site in these structures. At low temperature, both Sr 3FeTaO 7 and Sr 4FeTaO 8 exhibit antiferromagnetic interactions, but no long-range magnetic ordering was observed.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
